Trilacuna besucheti, left male palp, SEM (IZCAS AR-25151) A, B, H prolateral, retrolateral, and dorsal views C, D palpal bulb in prolateral and retrolateral views E, F, I distal part of palpal bulb in prolateral, retrolateral, and dorsal views (white arrows show the circular scale-like structure) G cymbium in prolateral view (black arrows show the large setae bases). Abbreviations: ab = anterior branch; emb = embolus; lb = lateral branch; ls = long setae.